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Chapter 21  Controlling Updates in DataWindow Objects</TITLE>
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<A NAME="BHBJIJJE"></A><h1>Chapter 21  Controlling Updates in DataWindow Objects</h1>
<A NAME="TI6184"></A><h4>About this chapter</h4>
<A NAME="TI6185"></A><p>When PowerBuilder generates the basic DataWindow object, it defines whether
the data is updatable. This chapter describes the default settings and
how you can modify them.</p>
<A NAME="TI6186"></A><h4>Contents</h4>
<A NAME="TI6187"></A><table cellspacing=0 cellpadding=6 border=1 frame="void" rules="all"><tr><th  rowspan="1"  ><A NAME="TI6188"></A>Topic</th>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6189"></A><A HREF="pbugp188.htm#BHBHCEHJ">About controlling updates </A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6190"></A><A HREF="pbugp189.htm#BHBHCCJA">Specifying the table to
update</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6191"></A><A HREF="pbugp190.htm#BHBIAHFH">Specifying the unique key
columns</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6192"></A><A HREF="pbugp191.htm#BHBCEBDJ">Specifying an identity column</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6193"></A><A HREF="pbugp192.htm#BHBDBAJC">Specifying updatable columns</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6194"></A><A HREF="pbugp193.htm#BHBHDIEG">Specifying the WHERE clause
for update/delete</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6195"></A><A HREF="pbugp194.htm#BHBCHGBI">Specifying update when key
is modified</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6196"></A><A HREF="pbugp195.htm#BABCDFEGJ">Using stored procedures
to update the database</A></td>
</tr>
<tr><td  rowspan="1"  ><A NAME="TI6197"></A><A HREF="pbugp196.htm#CHDEJJJE">Using a Web service to update
the database</A></td>
</tr>
</table>

